Reliability comparison
Senior Member
Joined: Jan 2023
Posts: 133
Nope.
You really believe they chopped-off a cylinder from the straight six? That would be some feat of engineering. Not to mention, where'd they get the heads with four-valves per cylinder, and the computer-controlled variable valve timing, and numerous other stuff, which was never on the straight six?
You really believe they chopped-off a cylinder from the straight six? That would be some feat of engineering. Not to mention, where'd they get the heads with four-valves per cylinder, and the computer-controlled variable valve timing, and numerous other stuff, which was never on the straight six?
Of course, some things have been redone, but initially they were completely different engines with other capabilities,
But there is no connection with V10 at all))))
Senior Member
Joined: Apr 2017
Posts: 158
From: The Motor City
Actually, the I5 is half of a V10 that GM had built for a mid-engined supercar that got shelved. When they upgraded the 3.5L to the 3.7L, they added more stuff from the V10, like four-valves per cylinder, computer-controlled variable valve timing, a higher compression ratio, and a bunch of other stuff.
With regards to which is better or more reliable, the 5.3L is an GM LS based engine. Specifically the 2008-2009 Alpha is the LH8, the 2010 is the LH9. It would be tough to find another family of engines that has had the amount of money, development, and/or testing, and put in so many vehicles (link below states over 100 million LS engines have been produced). LH8 and LH9 do not have DOD or AFM, but the LH9 does have VVT and flex fuel capability.
https://en.wikipedia.org/wiki/Genera...s_Atlas_engine
"Atlas is a name for a family of modern inline piston engines for trucks from General Motors, used in the GMT355 and GMT360 platforms. The series debuted in 2002 with the Oldsmobile Bravada, and is also used in the Buick Rainier, the Chevrolet TrailBlazer and Colorado, the GMC Envoy and Canyon, the Hummer H3, Isuzu Ascender and i-370, and the Saab 9-7X. The engines use GM's Vortec name, and Straight-4, Straight-5, and Straight-6 engines are all part of the same family, sharing the same manufacturing equipment, rods, pistons, valves, and other parts." ...... "The Atlas program began in 1995 along with the planning for GM's next-generation mid-size SUVs and pickup trucks. "
https://www.motortrend.com/how-to/05...3-v10-history/
https://en.wikipedia.org/wiki/Genera...l-block_engine
This thread needs to be taken out behind the barn and put out of it's misery.
Member
Joined: Oct 2019
Posts: 49
1) Sorry, I don't have a cite from the mid-2000s, almost two decades ago. I will add that when I took my crankshaft to a machine shop that does a lot of work for national racing teams, the owner yelled 'Holy Sh*t' when attempting to pick it up. He said it was far heavier and beefier than any V8 crank he's handled from any manufacturer.
2) Wikipedia is OPINION.
3) The Motortrend article references the shelved attempt to shoehorn a mid-engine V10 into the Vette. A V10 consisting of adding two cylinders to the aluminum GM 350 V8, which is amenable to such modifications, as they long ago removed two cylinders to produce the GM V6.
2) Wikipedia is OPINION.
3) The Motortrend article references the shelved attempt to shoehorn a mid-engine V10 into the Vette. A V10 consisting of adding two cylinders to the aluminum GM 350 V8, which is amenable to such modifications, as they long ago removed two cylinders to produce the GM V6.
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